I cannot connect to my local database, i.e. on the same machine,
via sqlplus with this command:
but this will work:
I know that I have connected to oracle databases before (and
continue to do so) with the first command. Why doesn't it
work? I have my ORACLE_HOME and ORACLE_SID set correctly.
It has nothing to do with the listener.
I am sorry for such a simple, stupid question. But, after
years of using oracle, I am simply frustrated with this one.
Thanks ahead of time.